Abstract: In video motion estimation an initial candidate motion vector is generated for each block and a vector error is determined as for example a DFD. Spatial gradients of pixel values are calculated and used to refine the initial candidate motion vector. The relative contribution of the spatial gradients to the refinement process depends on the vector error.

Abstract: A method and software product display errors of a tracking system that utilizes a plurality of receivers positioned around a tracking area to receive pings periodically transmitted by a tracking tag within the tracking area. For each locate received from the tracking system, a symbol indicative of the locate is plotted on a display graphically depicting the tracking area. A vector connecting each pair of chronologically consecutive symbols is plotted on the display, the vector visually indicating an error within the locates that would otherwise not be visible on the display. Another method concurrently displays predicted sensitivity for each of at least two receivers of a tracking system that locates tracking tags within a tracking area, the receivers being positioned within a surrounding area of the tracking area. A graphical representation of the surrounding area, the tracking area, and receiver sensitivities indicate the predicted receiver coverage of the tracking area.

Abstract: A method of analyzing an array of pixel-to-pixel dissimilarity values to identify a pixel which has a low pixel-to-pixel dissimilarity value and which has neighboring pixels which have a low pixel-to-pixel dissimilarity value; the method comprising filtering the pixel-to-pixel dissimilarity values and varying the spatial extent of the filter aperture in dependence upon a picture spatial activity measure.

Abstract: A video frame rate converter has a temporal synchronization analyzer for dividing the input video sequence into successive groups of frames each of Nin consecutive frames and a motion analyzer for analyzing motion over the frames of each group to provide a group motion measure. The inverter includes both an interpolator for performing interpolation on a group of Nin input frames to provide Nout output frames, where Nin is different from Nout; and a synchronizer for deleting or repeating an identified frame from the group of Nin input frames to provide Nout output frames. A switcher then switches group-by-group in dependence upon the group motion measure between the interpolator and the synchronizer to form an output video sequence having an output frame rate different from the input frame rate.

Abstract: Disclosed are various embodiments involving a two-step searcher for cell discovery. Multiple scrambling codes associated with multiple neighboring cells are obtained. Slot timing is obtained for a received signal based at least in part on a detection of primary synchronization peak energy in the received signal. One of the scrambling codes for decoding the received signal is identified based at least in part on testing multiple scrambling code hypotheses in parallel during an accumulation time period of the received signal in response to obtaining the slot timing.

Abstract: Systems and methods may provide for identifying a plurality of areas in an image frame, and using fixed functionality logic to determine phase information for the image frame on an area-by-area basis. Additionally, a programmable processor can be used to identify motion associated with the image frame based at least in part on the phase information.

Abstract: A system for determining an aspect ratio of image content based on an analysis of the content. In an embodiment, an analyzer is configured to receive a data input corresponding to an image in a stream of images that constitute a video sequence of images. The analyzer is further configured to determine a mathematical representation of the image content based on a power spectrum analysis of vertical components of the image in comparison to a power spectrum analysis of horizontal components of the image. Based on this comparison of the vertical frequency components to the horizontal frequency components, a determination about the original aspect ratio of the image may be determined. This determination may be used by a video processor to correctly apply aspect ratio conversion for final image output.

Abstract: A method for detecting motion in video fields of video data, comprises the steps of: calculating texture information for a pixel in the video fields; determining a threshold value as a function of the calculated texture information; calculating a differential value for the pixel; and detecting motion in the video fields as a function of the determined threshold value and the calculated differential value.

Abstract: Audio data and video data are processed to determine one or more audible events and visual events, respectively. Contemporaneous presentation of the video data with audio data may be synchronized based at least in part on the audible events and the visual events. Audio processing functions, such as filtering, may be initiated for audio data based at least in part on the visual events.

Abstract: A noise estimator device of a video decoder includes a reception end, a low pass filter coupled to the reception end, a delay unit coupled to the reception end, a minimum level estimation unit coupled to the low pass filter for estimating a minimum of a specific number of low-pass results, a difference level estimation unit coupled to the low pass filter, the delay unit, and the minimum level estimation unit for determining a synchronization signal according to a plurality of low-pass results and the minimum of the specific number of the low-pass results, and for estimating a noise level according to the synchronization signal and signals outputted from the delay unit, and an output end coupled to the difference level estimation unit.

Abstract: The present invention discloses a video communication device and a method thereof, the method comprises: obtain a current battery energy level of a device; load information of the battery energy level to a ready-to-send video; execute video encoding to the ready-to-send video and sending the same. The present invention can display the information of the energy level of one party's device on the video communication image of another party's device, so that another party can realize the actually current battery energy level of one party's device, tempos of the video communication can be controlled well, effects of the video communication can be raised.

Abstract: Signal processing techniques are applied to digital image data to remove the distortion caused by motion of the camera, or the movement of the subject being photographed, or defective optics, or optical distortion from other sources. When the image is captured, the effect of relative motion between the camera and the subject is that it transforms the true image into a blurred image according to a 2-dimensional transfer function. The 2-dimensional transfer function representing the motion is derived using blind estimation techniques or by using information from sensors that detect the motion. The transfer function is inverted and used to define a corrective filter. The filter is applied to the image and the blur due to the motion is removed, restoring the correct image. Another embodiment uses the transfer function to avoid blur by combining multiple consecutive images taken at a fast shutter speed.

Abstract: In a terrestrial digital TV broadcast signal receiver capable of EPG (Electric Program Guide) display, EPG data are updated in a time as smaller as possible while a use does not watch any TV program, so that the EPG can be displayed in real time just after switching on of an electric power of the terrestrial digital TV broadcast signal receiver. When the electric power is switched off, an EPG data of a channel which will be lost the earliest is searched among the EPG data stored in the memory, and a time of day when the EPG data of the searched channel is lost is calculated. When a time for taking new EPG data reaches, the tuner is tuned to the channel, and a TV broadcast signal is received and a new EPG data is extracted from the received TV broadcast signal and stored in the memory.

Abstract: In order to decode and display a previously compressed digital image portion, a first portion of this image being previously decoded and displayed in a first display window:—a request of a user defining a direction of movement in the image is read (115);—a new display window in the image is determined (119) as a function of this movement;—at least one area to be decoded and a decoding direction is determined (121) from the relative position of the new display window with respect to the first display window and this area is decoded and displayed (125, 127, 129) according to the decoding direction determined.

Abstract: An encoded bit stream having a frame rate of 24 Hz or 23.976 Hz and a progressive format for both NTSC and PAL is recorded on a recording medium. An encoded stream reproduced from the recording medium is supplied to a decoder 20. In the decoder 20, the encoded stream is decoded and 24 p or 23.976 p video is obtained. A video converting portion 25 converts the reproduced video into a display video in accordance with the display format of a monitor 26. For the NTSC range, 29.97 i or 59.94 p display format can be used. For the PAL range, 25 i or 50 p display format can be used.

Abstract: A user provides a plurality of video frames for processing, and selects a cartoon color palette. The color of all selected pixels within all selected video frames is changed to that of the closest match in color within the cartoon color palette and is stored in a memory. Optionally, the user may create a custom cartoon color palette, and may select less than all of the pixels in any given video frame for processing.

Abstract: In an encoding process, video data are represented as a bitstream of quantized base data and enhancement data, which capture the difference between a quantized base video picture and an original unquantized input video picture. Due to bandwidth constraints on a communication channel, it may be unfeasible to transmit all enhancement data. During the encoding process, the enhancement data may be divided into “layers” based upon bandwidth restrictions. Following transmission, the layers are recombined and are added to the base data by a decoder, producing a viewable video sequence.

Abstract: In a method for encoding a non-interlaced signal (60P) into an interlaced signal (60I) and an auxiliary signal, the interlaced signal (60I) is generated in dependence on the non-interlaced signal (60P), and the auxiliary signal is generated by furnishing regeneration coefficients enabling a reconstruction of non-encoded lines (o: D) of the non-interlaced signal (60P) in dependence on the interlaced signal (60I: A, B, C) and the regeneration coefficients. The invention is preferably applied in a method of processing non-interlaced signals by equipment, such as studio equipment, developed for processing interlaced signals.